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Readme for vty-3.1.2

vty is a very simple terminal interface library.
Vty currently provides:
* Automatic handling of suspend/resume (SIGTSTP+SIGCONT).
* Automatic handling of window resizes.
* Supports Unicode characters on output, automatically setting and
resetting UTF-8 mode (beware double width and combining characters!)
* Automatic computation of minimal differences.
* Minimizes repaint area, thus virtually eliminating the flicker
problem that plagues ncurses programs.
* A pure, compositional interface for efficiently constructing display
images.
* Automatically decodes keyboard keys into (key,[modifier]) tuples.
* Automatically supports refresh on Ctrl-L.
* Automatically supports timeout after 50ms for lone ESC (a barely
noticable delay)
* Interface is designed for relatively easy compatible extension.
* Supports all ANSI SGR-modes (defined in console_codes(4)) with
a simple type-safe interface.
* Properly handles cleanup, leaving the cursor at the bottom of
the screen and erasing the last line.
Current disadvantages:
* No current support for non-ANSI terminals.
* UTF-8 support only works properly on the linux console/xterm,
and even then only if it is not the system default.
* Minimal support for special keys on terminals other than the
linux-console. (F1-5 and arrow keys should work, but anything
shifted isn't likely to.)
* Uses the TIOCGWINSZ ioctl to find the current window size, which
appears to be limited to Linux and *BSD.
darcs get --tag=rel-3.0.0 http://code.haskell.org/vty/
To compile the demonstration program: ghc --make Test.hs gwinsz.c
The main documentation consists of the haddock-comments and the
demonstration program